/*
 * GStreamer
 * Copyright (C) 2023 Igalia, S.L.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#pragma once

#include <gst/gst.h>
#include <gst/vulkan/gstvkapi.h>
#include "gstvkvideoutils-private.h"

G_BEGIN_DECLS

#define VK_CODEC_VER_MAJ(ver) (ver >> 22)
#define VK_CODEC_VER_MIN(ver) ((ver >> 12) & ((1 << 10) - 1))
#define VK_CODEC_VER_REV(ver) (ver & ((1 << 12) - 1))
#define VK_CODEC_VERSION(ver) VK_CODEC_VER_MAJ (ver), VK_CODEC_VER_MIN (ver), VK_CODEC_VER_REV (ver)

typedef struct _GstVulkanVideoFunctions GstVulkanVideoFunctions;
typedef struct _GstVulkanVideoSession GstVulkanVideoSession;

struct _GstVulkanVideoSession
{
  GstVulkanHandle *session;
  GstMemory **video_mems;
  guint n_mems;
};

typedef enum {
  GST_VK_VIDEO_EXTENSION_DECODE_H264,
  GST_VK_VIDEO_EXTENSION_DECODE_H265,
  GST_VK_VIDEO_EXTENSION_DECODE_VP9,
  GST_VK_VIDEO_EXTENSION_DECODE_AV1,
  GST_VK_VIDEO_EXTENSION_ENCODE_H264,
  GST_VK_VIDEO_EXTENSION_ENCODE_H265,
  GST_VK_VIDEO_EXTENSION_ENCODE_AV1,
  GST_VK_VIDEO_EXTENSION_MAX,
} GST_VK_VIDEO_EXTENSIONS;

#define GST_VULKAN_DEVICE_VIDEO_FN_LIST(V)              \
  V(CreateVideoSession)                                 \
  V(DestroyVideoSession)                                \
  V(GetVideoSessionMemoryRequirements)                  \
  V(DestroyVideoSessionParameters)                      \
  V(UpdateVideoSessionParameters)                       \
  V(CreateVideoSessionParameters)                       \
  V(BindVideoSessionMemory)                             \
  V(CmdBeginVideoCoding)                                \
  V(CmdControlVideoCoding)                              \
  V(CmdEndVideoCoding)                                  \
  V(CmdDecodeVideo)                                     \
  V(CmdEncodeVideo)                                     \
  V(GetEncodedVideoSessionParameters)

#define GST_VULKAN_INSTANCE_VIDEO_FN_LIST(V)            \
  V(GetPhysicalDeviceVideoEncodeQualityLevelProperties)

struct _GstVulkanVideoFunctions
{
#define DEFINE_FUNCTION(name) G_PASTE(G_PASTE(PFN_vk, name), KHR) name;
    GST_VULKAN_DEVICE_VIDEO_FN_LIST (DEFINE_FUNCTION)
    GST_VULKAN_INSTANCE_VIDEO_FN_LIST (DEFINE_FUNCTION)
#undef DEFINE_FUNCTION
};

#define GST_VULKAN_VIDEO_CODEC_OPERATION_IS_DECODE(codec) ((codec & 0x0000ffff) == codec)
#define GST_VULKAN_VIDEO_CODEC_OPERATION_IS_ENCODE(codec) ((codec & 0xffff0000) == codec)

extern const VkExtensionProperties _vk_codec_extensions[GST_VK_VIDEO_EXTENSION_MAX];
extern const VkComponentMapping _vk_identity_component_map;

gboolean                gst_vulkan_video_get_vk_functions       (GstVulkanDevice * device,
                                                                 GstVulkanVideoFunctions * vk_funcs);

gboolean                gst_vulkan_video_session_create         (GstVulkanVideoSession * session,
                                                                 GstVulkanDevice * device,
                                                                 GstVulkanVideoFunctions * vk,
                                                                 VkVideoSessionCreateInfoKHR * session_create,
                                                                 GError ** error);

void                    gst_vulkan_video_session_destroy        (GstVulkanVideoSession * session);

GstBuffer *             gst_vulkan_video_codec_buffer_new       (GstVulkanDevice * device,
                                                                 const GstVulkanVideoProfile *profile,
                                                                 VkBufferUsageFlags usage,
                                                                 gsize size);

GstVulkanImageView *    gst_vulkan_video_image_create_view     (GstBuffer * buf,
                                                                gboolean layered_dpb,
                                                                gboolean is_out,
                                                                GstVulkanHandle * sampler);

GST_VULKAN_API
gboolean                gst_vulkan_video_try_configuration     (GstVulkanPhysicalDevice * device,
                                                                GstVulkanVideoProfile * profile,
                                                                GstVulkanVideoCapabilities * out_vkcaps,
                                                                GstCaps ** out_caps,
                                                                GArray ** out_formats,
                                                                GError ** error);

G_END_DECLS
